Results 91 to 100 of about 243,906 (313)

Multi-wavelength studies of the gamma-ray pulsar PSR J1907+0602

, 2012
PSR J1907+0602 is a radio-faint, 107-ms GeV gamma-ray pulsar that was discovered with the Fermi LAT in a blind pulsar search. PSR J1907+0602 is located near the bright, extended TeV gamma-ray source MGRO J1908+06 which may be an associated pulsar wind ...
Pandel, Dirk, Scott, Robert
core   +1 more source

Circular Polarimetric Imaging with a Metamaterial Integrated Long‐Wavelength Infrared Focal Plane Array

Advanced Science, EarlyView.
A quantum well infrared photodetector based long‐wavelength infrared division‐of‐focal‐plane‐array circular polarimeter featuring a 320 × 256 pixel array integrated with a chiral meta‐mirror structure array is established. The device achieves a circular polarization extinction ratio of 5.67, a 9.13‐fold enhancement in responsivity, a noise equivalent ...
Tianyun Zhu, Ling Wang, Wenji Jing, Jie Deng, Jiexian Ye, Yujie Zhang, Zeshi Chu, Jing Zhou, Xiaoshuang Chen, Xiangyang Li, Wei Lu, Xuechu Shen   +11 more
wiley   +1 more source

Upper Limits on the Gamma-Ray Emission from the Microquasar V4641 Sgr

The Astrophysical Journal
Following a recent detection of TeV radiation by the Large High Altitude Air Shower Observatory and the High-Altitude Water Cherenkov Observatory, coincident with the direction of the microquasar V4641 Sgr, we search for possible GeV emission from this ...
Zihao Zhao, Jian Li, Diego F. Torres
doaj   +1 more source

TAIGA - a hybrid array for high energy gamma astronomy and cosmic ray physics

EPJ Web of Conferences, 2018
The physics motivations and advantages of the new TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) detector are presented.
Budnev N., Astapov I., Bezyazeekov P., Boreyko V., Borodin A., Brueckner M., Chiavassa A., Dyachok A., Fedorov O., Gafarov A., Garmash A., Gorbunov N., Grebenyuk V., Gress O., Gress T., Grishin O., Grinyuk A., Haungs A., Hiller R., Horns D., Huege T., Kalmykov N., Kazarina Y., Kindin V., Kiryuhin S., Kirilenko P., Kleifges M., Kokoulin R., Kompaniets K., Korosteleva E., Kostunin D., Kozhin V., Kravchenko E., Kuzmichev L., Lemeshev Yu., Lenok V., Lubsandorzhiev B., Lubsandorzhiev N., Mirgazov R., Mirzoyan R., Monkhoev R., Osipova E., Pakhorukov A., Panasyuk M., Pankov L., Petrukhin A., Poleschuk V., Popescu M., Popova E., Porelli A., Postnikov E., Prosin V., Ptuskin V., Rjabov E., Rubtsov G., Pushnin A., Sagan Y., Sabirov B., Samoliga V., Schröder F., Semeney Yu., Silaev A., Silaev A., Sidorenkov A., Skurikhin A., Slunecka V., Sokolov A., Spiering C., Sveshnikova L., Tabolenko V., Tarashansky B., Tkachenko A., Tkachev L., Tluczykont M., Wischnewski R., Zagorodnikov A., Zhurov D., Zurbanov V., Yashin I.   +78 more
doaj   +1 more source

The TAIGA experiment: from cosmic ray to gamma-ray astronomy in the Tunka valley

, 2016
The physical motivations and advantages of the new gamma-observatory TAIGA (Tunka Advanced Instrument for cosmic ray physics and Gamma Astronomy) is presented.
N. Budnev, I. Astapov, P. Bezyazeekov, A. Bogdanov, V. Boreyko, M. Büker, M. Brückner, A. Chiavassa, O. Chvalaev, O. Gress, T. Gress, O. Grishin, A. Dyachok, S. Epimakhov, O. Fedorov, A. Gafarov, N. Gorbunov, V. Grebenyuk, A. Grinuk, A. Haungs, R. Hiller, D. Horns, T. Huege, A. Ivanova, A. Kalinin, N. Karpov, N. Kalmykov, Y. Kazarina, N. Kirichkov, S. Kiryuhin, M. Kleifges, R. Kokoulin, K. Komponiest, A. Konstantinov, E. Korosteleva, D. Kostunin, V. Kozhin, O. Krömer, M. Kunnas, L. Kuzmichev, V. Lenok, B. Lubsandorzhiev, N. Lubsandorzhiev, R. Mirgazov, R. Mirzoyan, R. Monkhoev, R. Nachtigall, A. Pakhorukov, M. Panasyuk, L. Pankov, A. Perevalov, A. Petrukhin, V. Platonov, V. Poleschuk, E. Popova, A. Porelli, V. Prosin, V. Ptuskin, G. Rubtsov, A. Pushnin, V. Samoliga, P. Satunin, F. Schröder, Y. Semeney, A. Silaev, A. Skurikhin, V. Slucka, C. Spiering, L. Sveshnikova, V. Tabolenko, B. Tarashansky, A. Tkachenko, L. Tkachev, M. Tluczykont, D. Voronin, R. Wischnewski, A. Zagorodnikov, V. Zurbanov, I. Yashin   +78 more
semanticscholar   +1 more source

Determining Exciton Diffusion Length in Organic Semiconductors: Unifying Macro‐ and Microscopic Perspectives

Advanced Energy Materials, EarlyView.
Exciton diffusion length in organic semiconductor films is determined from encounter/annihilation rates. Non‐normalized exciton densities and proper intrinsic lifetime reference avoid over‐parametrization of the fits. Monte Carlo Simulation of individual molecule‐to‐molecule hops reproduce these results (②) when matching lattice constant and hoping ...
Wenchao Yang, Catherine S. Pursglove De Castro, Safakath Karuthedath, Yuliar Firdaus, Nisreen Alshehri, Si Chen, Diego Rosas Villalva, Christopher E. Petoukhoff, Amr Dahman, Derya Baran, Thomas D. Anthopoulos, Frédéric Laquai, Julien Gorenflot   +12 more
wiley   +1 more source

TeV Particle Astrophysics II: Summary comments [PDF]

, 2006
A unifying theme of this conference was the use of different approaches to understand astrophysical sources of energetic particles in the TeV range and above.
, Abassi R U, Abraham J, Achterberg A (IceCube Collaboration), Allard D, Aloisio R, Blas Cabrera, Bouwhuis M, Budnev N M, Charles Dermer, Coyle P, Dieter Horns, Eckart Lorenz, Eiichiro Komatsu, Elena Aprile, Elisa Bernardini (IceCube), Elisa Resconi, Frank Krennrich, Gabriella Catanesi, Gary Varner, Haino Falcke, Han T, Haungs A, Hillas A M, James Cronin, Jordan Goodman, Julia Becker, Kael Hanson, McKee F, Muraishi H, Neil Cornish, Nicolas Busca, Pasquale Blasi, Peters B, Piero Ullio, Scott Wakely, Shigeru Yoshida, Simon Swordy, Sommers P, Thomas K Gaisser, Thomas K Gaisser, Thomson G B, Tom Weiler   +42 more
core   +2 more sources

Transport Resistance Dominates the Fill Factor Losses in Record Organic Solar Cells

Advanced Energy Materials, EarlyView.
Organic photovoltaics are a promising solar cell technology, but even the record devices with 20% efficiency have significant fill factor losses due to low active layer conductivities. In this Perspective, the authors describe the origin of these losses, discuss experimental methods for their quantification, and explain how to minimize them to optimize
Chen Wang, Roderick C. I. MacKenzie, Uli Würfel, Dieter Neher, Thomas Kirchartz, Carsten Deibel, Maria Saladina   +6 more
wiley   +1 more source

Determination of Electron Extraction in Semiconductor Photoanodes: Steady‐State and Small‐Perturbation Response

Advanced Energy Materials, EarlyView.
A unified analytical model is developed to consistently interpret the steady‐state and small‐perturbation response of photoanodes, both in the time and frequency domain. By accounting for non‐ideal electron extraction and slow hole kinetics, the model explains key experimental trends in the case of a hematite photoanode and allows extraction of related
Paola Ragonese, Chiara Maurizio, Boris Kalinic, Thomas Kirchartz, Sandheep Ravishankar   +4 more
wiley   +1 more source

Thermal‐Infrared Measurements of the North‐East Tower at Ardrossan Castle

Archaeological Prospection, EarlyView.
ABSTRACT Thermal‐infrared imaging of buildings is used to investigate a range of phenomena including the accumulation of moisture. In general, the presence of moisture poses a direct danger to historic structures and must be characterized prior to any intervention.
Michael Bowry, Amanda Simpson, Junseo Bae, Christopher Brooke, Annalise Gillan, John Hughes, Louise Allan, Christine Campbell, Andy Jones, Martin Kostigovs, Leanna Lennox, Colin Macintyre, Jill McColl, Michael McCulloch, Craig McLelland, Alison Montgomery   +15 more
wiley   +1 more source